Holding(s) in Company

24 Mar 2011 14:34

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi 1. Identity of the issuer or the underlying Interserve Plc issuer of existing shares to which voting rights are attached: ii 2 Reason for the notification (please tick the appropriate box or boxes): An acquisition or disposal of voting rights X An acquisition or disposal of qualifying financial instruments which

may result in the acquisition of shares already issued to which voting rights are attached

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

An event changing the breakdown of voting rights Other (please specify):

3. Full name of person(s) subject to Mondrian Investment Partners Limited (FRN the notification obligation: iii

- 149507) 4. Full name of shareholder(s) (if different from 3.):iv 5. Date of the transaction and date 23 March 2011 on which the threshold is crossed or reached: v 6. Date on which issuer notified: 24 March 2011 7. Threshold(s) that is/are crossed 5% or reached: vi, vii 8. Notified details:A: Voting rights attached to shares viii, ixClass/type of Situation previous Resulting situation after shares to the triggering the triggering transaction transaction if possible Number Number Number Number of % of voting using of of of shares voting rights x the ISIN CODE Shares Voting rights Rights Direct Direct Indirect Direct Indirect xi xii

GB0001528156 8,964,782 6,269,212 8,998,553 6,302,983 5.01% B: Qualifying Financial Instruments Resulting situation after the triggering transaction

Type of financial Expiration Exercise/ Number of voting % of voting

instrument date xiii Conversion Period rights that may be rights xiv acquired if the instrument is exercised/ converted.

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of Exercise Expiration Exercise/ Number of voting % of voting financial price date xvii Conversion rights instrument rights xix, xx instrument period refers to xviii Nominal Delta

Total (A+B+C)

Number of voting rights Percentage of voting rights 6,302,983 5.01%

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: xxi

Proxy Voting: 10. Name of the proxy holder: Mondrian is a London-based discretionary investment manager. Client assets managed by Mondrian are custodied at our clients' custodians of choice (i.e. Mondrian does not act as custodian for any of its clients).

11. Number of voting rights proxy N/A holder will cease to hold: 12. Date on which proxy holder will N/A cease to hold voting rights: 13. Additional information: N/A 14. Contact name: Mr Trevor Bradbury 15. Contact telephone number: 0118 932 0123